Method of forming an alkaline-earth metal selenide and/or sulfide compound
A method of forming an alkaline-earth metal selenide and/or sulfide compound is disclosed as including reacting a carbonate of an alkaline-earth metal with zinc selenide (ZnSe) and/or zinc sulfide (ZnS) in a mixture atmosphere of hydrogen gas (H 2 ) (10 vol. %) and nitrogen gas (N 2 ) at a temperature between about 1,100° C. and about 1,400° C. for not more than about 1 hour.
1 . A method of forming an alkaline-earth metal selenide and/or sulfide compound, including reacting a carbonate of an alkaline-earth metal with zinc selenide (ZnSe) and/or zinc sulfide (ZnS) in an atmosphere of hydrogen (H 2 ) gas and nitrogen (N 2 ) gas, and reacting said carbonate of said alkaline-earth metal with said zinc selenide (ZnSe) and said zinc sulfide (ZnS) in said atmosphere of hydrogen gas (H2) and nitrogen gas (N2) to form a selenium-sulfide alloy of said alkaline-earth metal.
2 . The method of claim 1 , wherein said hydrogen gas comprises 10 vol. % of said atmosphere.
3 . The method of claim 1 , wherein said alkaline-earth metal is selected from a group consisting of calcium (Ca), strontium (Sr) and barium (Ba).
4 . The method of claim 1 , further including reacting said carbonate of said alkaline-earth metal with said zinc selenide (ZnSe) and/or said zinc sulfide (ZnS) at a temperature between 1,100° C. and 1,400° C.
5 . The method of claim 1 , further including reacting said carbonate of said alkaline-earth metal with said zinc selenide (ZnSe) and/or said zinc sulfide (ZnS) in said atmosphere for not more than 1 hour.
6 . The method of claim 1 , further including doping said selenium-sulfide alloy of said alkaline-earth metal with luminescent ions.
7 . The method of claim 6 , wherein said luminescent ions comprise luminescent lanthanide ions.
8 . The method of claim 7 , wherein said luminescent lanthanide ions comprise europium ions (Eu 2+ ).